When the proper temperature is reached, the alloy will flow readily into the space between the tube outer wall and the fitting socket, drawn in by the natural force of capillary attraction.

• 当温度加热到一定程度，合金将流到管道外壁和管件插口内壁之间的空隙中，这种吸入作用是通过毛细吸引的自然力实现的。